Three-dimensional extensions to Jeffery–Hamel flow

Stow, S.R and Duck, P.W and Hewitt, R.E (2001) Three-dimensional extensions to Jeffery–Hamel flow. Fluid Dynamics Research, 29. pp. 25-46.

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We consider two viscous ows, both of which are in a class of three-dimensional ow states that are closely related to the classical Je ery�Hamel solutions. In the ÿrst conÿguration, we consider a ow between two planes, intersecting at an angle , and driven by a line-source-like solution in the neighbourhood of the apex of intersection (just as in classical, two-dimensional, Je ery�Hamel ow). However, in addition we allow for a ow in the direction of the line of intersection of the planes (in order to capture the broader class of three-dimensional solutions). In this ow, two solution scenarios are possible; the ÿrst of these originates as a bifurcation from Je ery�Hamel ow, whilst the second scenario describes a radial velocity of the classical Je ery�Hamel form (also with a zero azimuthal velocity component), but with an axial velocity determined from the radial ow. Both of these solutions are exact within the Navier�Stokes framework. In the second conÿguration, we consider the high Reynolds number, three-dimensional ow in a diverging channel, with (generally) non-straight walls close to a plane of symmetry, and driven by a pressure gradient. Similarity solutions are found, and a connection with Je ery�Hamel ows is established for the particular case of a ow through straight (but non-parallel) channel walls, and again, additional three-dimensional solutions are found. One member of this general class (corresponding to the ow through a straight-walled channel, driven by linearly increasing pressure in both the axial and cross-channel directions), leads to a further family of exact Navier�Stokes solutions.

Item Type: Article
Uncontrolled Keywords: Jeffery-Hamel self-similar exact reduction three-dimensional
Subjects: MSC 2010, the AMS's Mathematics Subject Classification > 76 Fluid mechanics
PACS 2010, the AIP's Physics and Astronomy Classification Scheme > 40 ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID MECHANICS > 47 Fluid dynamics
Depositing User: Dr Richard E. Hewitt
Date Deposited: 14 Nov 2013
Last Modified: 20 Oct 2017 14:13

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